特定断路器配置

与提供默认配置类似，您可以创建一个Customizerbean 中，它会传递一个Resilience4JCircuitBreakerFactory或ReactiveResilience4JCircuitBreakerFactory.spring-doc.cadn.net.cn

@Bean
public Customizer<Resilience4JCircuitBreakerFactory> slowCustomizer() {
	return factory -> factory.configure(builder -> builder.circuitBreakerConfig(CircuitBreakerConfig.ofDefaults())
			.timeLimiterConfig(TimeLimiterConfig.custom().timeoutDuration(Duration.ofSeconds(2)).build()), "slow");
}

除了配置创建的断路器外，您还可以在创建断路器之后、将其返回给调用方之前自定义该断路器。为此，您可以使用addCircuitBreakerCustomizer方法。这对于向 Resilience4J 断路器添加事件处理程序非常有用。spring-doc.cadn.net.cn

@Bean
public Customizer<Resilience4JCircuitBreakerFactory> slowCustomizer() {
	return factory -> factory.addCircuitBreakerCustomizer(circuitBreaker -> circuitBreaker.getEventPublisher()
	.onError(normalFluxErrorConsumer).onSuccess(normalFluxSuccessConsumer), "normalflux");
}

如果需要将安全上下文传播给 Circuit Breaker，则必须配置要使用的 Circuit BreakerDelegatingSecurityContextExecutorService.spring-doc.cadn.net.cn

@Bean
public Customizer<Resilience4JCircuitBreakerFactory> groupExecutorServiceCustomizer() {
	return factory -> factory.configureGroupExecutorService(group -> new DelegatingSecurityContextExecutorService(Executors.newVirtualThreadPerTaskExecutor()));
}

反应式示例

@Bean
public Customizer<ReactiveResilience4JCircuitBreakerFactory> slowCustomizer() {
	return factory -> {
		factory.configure(builder -> builder
		.timeLimiterConfig(TimeLimiterConfig.custom().timeoutDuration(Duration.ofSeconds(2)).build())
		.circuitBreakerConfig(CircuitBreakerConfig.ofDefaults()), "slow", "slowflux");
		factory.addCircuitBreakerCustomizer(circuitBreaker -> circuitBreaker.getEventPublisher()
        	.onError(normalFluxErrorConsumer).onSuccess(normalFluxSuccessConsumer), "normalflux");
     };
}